So far, he has proven himself to be a good snow plow, bulldozer, backhoe, chainsaw and stump grinder, and much more !! I should open my own business- Ino's excavation service!! He definately is a machine!! When he sees a squirrel on the walk- he goes nuts now and gets real low to the ground and digs in- he is very strong . We definately need to work on leash manners (and socialization)!! I wish he didn't have the knee problems when he was young- he would have done great with weight pull.